Automatic scale



A; S. McKEE. AUTOMATIC SCALE.

APPLICATION FILED LAN-10, I920.

1 4341 553" Patented Nov. 7, 1922.

1GZMTWCKL m1).

Patented Nov. 7, 1922.

UNITED STATES AMOS S. MOKEE, OF CHICAGO, ILLINOIS.

AUTOMATIC SCALE.

Application filed. January 10, 1920. Serial No. 350,509.

To all an hom it may concern.

Be it known that I, AMOS S. Molina, a citizen of the United States. residing at Chicago. in the county of Cook and State of Illinois, have invented certain new and use ful Improvements in Automatic Scales, of which the following is a specification.

The invention relates to automatic weighing and filling devices.

0 One of the objects of the invent-ion is to provide an improved device for automatically weighing mobile materials. such as liquids. and filling containers ,with admeas ured, uniform quantities of such materials. Another object is to provide an improved device for more accurately controlling the How of mobile material or liquid by decreasing the stream fiow before the predetermined quantity, by weight, has been deposited in a receptacle to be filled,

Another object is to provide a, device which will entirely shut off the flow of material from a reservoir to a receptacle when the predetermined apportioned quantity thereof has been deposited in. the receptacle and which will automatically Withdraw the filling nozzle from the filling position with res ect to the receptacle.

nother object of the invention is to provide a device of the character described which will initiate a rather full How of material into the receptacle until the receptacle has received a given quantity,-and which will automatically decrease the flow of material into the receptacle just prior to shutting it off entirely so as to more accurately weigh the material going into the receptacle.

Another object of the invention is to provide a filling nozzle, provided with a series of valve ports of different areas, connected to a reservoir containing liquid to be dispensed, and associating therewith a series of weight controlled stops for successively arresting the nozzle with different ports open to diminish the flow by steps.

Other, further and more specific objects of the invention will become readily apparent to persons skilled in the art from a consideration of the following description when taken in conjunction with the drawings, wherein *ig. 1 is a diagrammatic representation of the apparatus, or device, with the parts in position to begin the deposit of liquid into the receptacle,

Fig. 2 is a similar view, showing the parts in position after the smaller port has been connected to the reservoir, by the upward movement of the nozzle.

Fig. 3 shows the position of the parts when the nozzle has been moved into its extreme upper position and has closed the port communicating with the reservoir, and withdrawing the nozzle from the receptacle.

Fig. 4 is an enlarged section of the nozzle.

In all the views the same references characters are employed to indicate similar parts.

A reservoir, to contain the liquid to be deposited in receptacles, is indicated by the reference character 5 and the receptacle by the character 6. The reservoir is connected to a nozzle casing 7 by a conduit 8. The nozzle 9 consists of a tube closed at its upper end and havin preferably, two ports. a larger. port 10 and a smaller port 11. each adapted for registration with the open end of the conduit 8. When the parts are in positions shown in Fig. 1, the li uid, or other mobile material, will flow free y'from the reservoir 5 through the conduit 8 and nozzle 9 into receptacle 6. When the parts are in position shown in Fig. 2, the port 11 will register with the open end in the conduit 8 and the How will be roportionately restricted. while in Fig. 3, t e nozzle has been moved to its utmost upper position and has shut off the flow of liquid from the conduit 8 into the receptacle.

The apparatus to be hereinafter described, accomplishes the operation of the mechanism to first cause the free flow of liquid into the rece tacle, then to restrict the flow of liquid, so tliat the weighing apparatus will operate more accurately, and subsequently to entirely shut oil" the How of liquid into the receptacle; such operation being effectuated by the Weight of the liquid deposited in the receptacle.

12 is a scale beam pivoted as at 13 to a support 14, and having a table 14' supported on the end 15 of the scale beam. to receive and support the receptacle 6. Carried by the arm 15 are two contact levers, 16 and 17. pivoted thereto. as at 18 and 19, respectively. These levers are insulated from the beam 15 and from each other and each serves as a member of a separate electric swit. h, operable by movement of the beam 15. A relatively stationary contact 20 cooperates with the lever 16 and a similar contact 21 cooper ates with the lever 17. Adjustable stops 22 and '23. arried by the beam 1;), determine the time when the circuit i s'to he 0' 'en'ed'liiy the levers 1'6 and 17. with their respect-ive contacts. '20 and 21. A spring 24 one for each lever. holds the lever yielding and normally in connection with the respective contacts 20 and 21. The arrangement'is such, that when the beam 15 is depressed by the increased weight of the receptaclfthe st op 22 ren'iores the lever 16 away from its contact 20, thns opniii g aneleiftric before the circuit is opened 'by him an; of the lever 17 from its stop 21. 1s dire to the fact that the siop'ea is located Maser to it s'lever than is the'stoo 23 with respect ,to its lever. so that Upon the dowiiii a'r'd-iniirement of the end 15, of the heariflth' will be open'first between tlielere'r 1 6 the contact 20mm s ub set uentl upon further movement of the beam between the leyer 1'7 and its contact 21. i l i n A stop lerei 25,15 piyo ted at 26, and. has an end 27 movable intothe'pa'th of tie ertically movable puzzle "A'irei'glit 2 is'ht. tached to one end of a cor d'29,i'\ihichp'asses over a pair of pulleys 30 and 31 andis at tached to the nozzle 9 as at l Veight'QS is sufficient at i ts'othenendto'antomatieally lift the nozzle to its highest po'sfiliiotii s uich as that shown Fi ."'3i yiihen' siich'niovernent is not opposed by Quest op s that maybe placed within i'tspathof nioj eme f1 When the stop l is'iii the p 's'i ion shown in Fig. 1 then the laigei portfil.,"of th'fi iilie/9 registers with thpd eni'ngbf eanfi'iiii'a, and a fullf lowpf li'ciui 'i'id theiese iwoir to the receptacle is permissili e." If stop 27 be removed, thenthehieiizllitQS will the nozzle upwardly 'to tl1e" st'op le i'er 33'. which is pivoted as at 32 nd i s proi'iq'le rl with an extended end 35, that mziy be 51" dead in the pathof theascending no'zzlel jen the stop lever 25 has been moved into the {5,13 Siam; shown in ig; 2; aardegsepm 28 may move the nozzle ($1 .0. the dsition shown in this s me, "w eren :dn lie i'e stricted port 11 will registei 'ii'ith the open end of the conduit 8 aiidiFsnialler flow of liquid will pass into the receptacle GT 'No ii' if the stop 35 be 'remo'i ed from the path til the 'lipwa'rdly moialile nozzle. t'heii the weight 2g will morethe 1 02216 into its e3 treme upper position in contact with affigfd stop '36; as shown in Fi f -Tih hereupori the open end of the conduit 8 is closed and the lower end '9 of the nozzle has beeri' rais'ed ab oi'e the receptacle 6 so'that'the rereiithcle may hereadil'j remov'ed' frorn its pqsitidn upon the weighing s ale table. I "Anleclromagriet 37; when energized, will hold the stop ler'er 25 iii'positiohsiihwn in Fig. l, and prevent weight '2B"'fi'-bm" raisin nozzle 9. \Vhexi'. howei'e'r. the (firc'u'it of the m'agiiet is open. a weight 28 will raise noztlins more the s'top leiiei out path thereof into position shown in lfig. '2. ifiiniilafi efl'ects ai e produ'eed 'wlien a magnet 38 is"ener'gi"zed and when the circuit thereof is opened. Thus, magnet 38, when energized. hOlSZ S stop .35. ill the path of nozzle 5) and arrests the upward movement thereof. When. however, the magnet is deenergized weight 28 may elevate nozzle 9 against permanent st-Op0-36. Lqi! nn 'rry' An electric battery L0 is connected by a wire 41 to Contact levers l6 and 17. The other terminal of the battery is comic: ted by a wire 42 to the magnets 37 and 8, over the'branch wires 13 and' l l. A wire (tonnects the contacjt 20 to'the'other terminal l6 of the electromagnet 37, and the wire 47 connects the contact Qlto the other terminal 48 of the magnet New it will be manifest that, so long as the circiiits are closed by the contact levers 16 and 17 and the respective contacts 20 and ZIImagnets 37 and 38 will hold their respectivestop s'fi 35 in the path of the ascending-nozzle 9. After magnets hav'bee i denei'gized and the stops displaced by the npivard mhi'eihent of the nozzle, reenergizin of the i'nag net will not replace the 'stops.' hat mustb'e'done at the timeWhenthe nozzle is depressed. ready for action 'and in the particular instance. it accomplished by manual operation. Qne off the features pf ii'lfiphitanee of the inyenti his the manner ii whi'ch tlic'sca'lc beam 1 "is poised. The shi ftiiigweiglit 50, on the beam' l5, and a susperide d weight 51 on the {aid 52 of the beam is not sn'flic'ient to correctl' determine thei i'e ight o the liquid to be eposite d in the receptacle 6. "Another weight, 53, looselg connected to the lower end of the weight 51 is'snb scqnently to he lifted by :the upnhrd mo yeni enl ofthc beam end 52 as the re c el'itacl'e becomes heavier. i

The operation of the d erice is substan tially as follhWdi-Wheh the parts are in the positions shdwn in Fig. {l .the' 'reeeptacle bem pla'ced'up'onthe'platform 1 of the scale. the outer ends'25'and33 of the stop lovers are then manually raised so that they are within the fi 'eld s' of 'the respective electio magnets 37 and 38. At that time there isno liquid in the rece )tac' le ti and the contacts 2H and 21 are closed, thus energizing the magnet's." 'B e fore the stop lever 's are raised. howver the ad ai d t 1mm" shb'wn'in Fig. 1, causing the larger port'lO to register with the opening'in the conduit 8. and causing the liquid to flow from the reservoir 5 into the receptacle 6. Instead of the liquid floa ing downwardly in the receptacle, 6;): refer to provide lateral openings 54 and to c dse the lower e'ndof the nozzle, so that the liquid will flow into the receptacle a lateral direction instead 'of i'ertical. This will not distilrb 'the 'balancing efl'eot of the scale. When 'the frec'eptiiele 'is put upon the shown in Fig. 2.

of the liquid within the platform ll and'sutlicient liquid is deposited in the receptacle, the outer end-of the scale beam 52 will be raised by the depression of the inner end 15, by the accumulated weight receptacle. At this time the circuit is opened between the contact lever 16 and its contact '20, thus deenergi'zing the magnet 37, whereupon the nozzle will be raised and displace the end 27 that was previously in its path, andthe weight 28 will lift the nozzle until it is in contact with the end 35 of the lever 33, as This operation will cause the smaller port ll to be brought into register with the conduit 8 and the liquid will flow in to the rcceptacle less rapidly. At this'time, however, the weight 53 has not been lifted. Subsequent to the time that the outer. end. 52 of the scale beam lifts the weight 53; the downward movementof the end 15 of the scale beam will move the contact lever 17 and open the circuit between it and i lscontact ZLVthusdePnergizing the niagnet 38 whereupon the hoszlc 9 will move the stop 35 out of its path and it will be raised by weight 28 until it makes contact with the fixed stop 36, as clearly shown in Fig. 3, whereupon the nozzle will thereby close the port at the end of the conduit 8 andshut off the liquid and raise the lower end of the nozzle above the receptacle so that the latter may conveniently be removed from the scale platform.

The device, as described, is adapted for use with any material that will flow, but is especially designed for filling receptacles with liquids of uniform aggregate weight. The effect of the weight 53 is to prevent the simultaneous de-energizing of both magnets due to momentum of he scale beam.

lVhile l have herein shown a single embodiment of my invention for the purpose of clear disclosure. it will be manifest to persons skilled in the art, that considerable changes may be made in the arrangement and configuration of the parts within the scope of the appended claims.

Having described my invention. what I claim as new and desire to secure by Let-- ters Patent, is

1. A liquid controller and weighing mech anism having in combinative association a scale beam to support the receptacle to be filled; a reservoir to contain the liquid for deposit in said receptacle; a movable nozzle connected to the reservoir; a valve controlled by movement of the nozzle; a stop to hold the nozzle in filling position. with the valve open; means to move the nozzle out of filling position to close the valve; and means operable by the scale beam to cause removal of the stop to permit movement 0 the nozzle.

2. An automatic scale providing a vertically movable tube having' a plurality of mo vable scale beam,

tacle iand valvepforts ptrlifl'erent sizes and movable to be succes'siv'el positioned between a source ofsilpply of t e material to be weighed; and a receptacle forv receiving the: material, a

control mechanism successively operated through the movement of the beam to'causedifferent valve ports to be positioned between the source and the recepmeans independent of the control mechanism and acting to increase the resistance f the beam after the same has moved throu h a portion of its travel.

3. device ot lthe character described hav ing in combinative association a weighing scale member tor,, snpporting .a receptacle to befilled; means to cause flow of. materialfor in s aid. receptacle a movable nozzle, se ving as. a part of a conduit 'for control of said, material; means to move the. nozzle fromthe receptacle; .a stop in the. path, of the nozzle; an electro magnet, which, ,when energized, naintainsthestopiin said position;.-and meansto .open the circuit contain ing, said nagiiet upon. downward movement 0t the 'scale member to permit movement of. said nozzleto stopthefiow of material I 4.; vice of the character described having combinativeassociation a Weighing scale inember with an insutlicient initialresist n te. to, its 'downwardilmovement' to indi rate correctly the weight of a desired quantity of material to be deposited in a receptacle to be supported thereby; means to cause flow of material for deposit in said receptacle; a movable nozzle serving as a part of a conduit for control of How of said material; means to move the nozzle from position to be occupied by the receptacle; a stop in the path of the nozzle; an electro-magnet. when energized to maintain the stop in said position; means to open the circuit containing said magnet. upon initial downward movement of the scale member. to permit movement. of said nozzle whereby to decrease the flow of material; another stop in the path of said nozzle; an electro-magnet main taining the latter stop in position; means to increase the resistance to movement of said scale member; and means to deenergize the second electro-magnet upon subsequent downward movement to the scale member to permitfurther movement of the nozzle to stop the How of said material 5. A device of the character described having in combinative association a scale member movable by weight of an object supported thereon; a nozzle through which materi 1 may flow and movable with respect to the said member; a valve to restrict the flow of material through the nozzle and operable by movement of said nozzle; means normally preventing movement of the nozzle and operable through the initial downward movement of said scale member to open said valve; and means normally preventing fun ther movement of the nozzle to close said valve and, upon the snbsequentdo vnward movement of said scale member, permitting said valve to close.

6. A device of the character described having in combinative association 3 scale member movable by weight of an object supported thereon; a nozzle through which material may flow and movable with respect to said member; a valve to restrict the flow of material through the nozzle and operable by movement of said nozzle; stops for pre venting n'iovement of said nozzle; means to perrnit movement of said nozzle and open able by the initial downward movement of said scale member; means to additionally restrain the movement of said scale member; and means to permit further movement of said nozzle to close said valve upon subseqnent' movement of the scale member after the interposition of increased resitanoe to its movement.

'7'."An automatic weighing scale having a movable provided with a'plurality of valve p' orts of different sizes which may be successively positioned between a source of. supply of a material and a ljQQQPlZtIClG; for receiving the material and in which it is vvei ghed, a scale beam for carrying the rece ptacle electromagnetiomeans for controlling the mov ablepart to effect the successive openingand closing the valve ports, and circuit connections controlled by the scale beam and governing theoperation of the electromagnetic means' 8. An automatic. Weighing scale having a movable beam for supporting a receptacle for holding material being Weighed, a movable no zzle for conveying material to the receptacle and ha ving a pluralitfi of openings of different slzes which may brou ht successively into register with a con uit from a source of supply of the material, end means controlled by the beamffor controlling the movement of the nozzle to control the success ve register of the openings therein. i

9. An automatic weighing scale having a movablebea'm for support ng areceptecle for holding niaterial being/We ghed, a n 1ovable nozzle or conveying material to the receptacle and having a pluralitvofiopenings of d e en S ze w i may e'bm h successively into register with a conduit from a source of supply of the materi al angl electromagnetic means controlled the beam for controlling the movement of the nozzle to control the successive register'of the openings therein. In testimony whereof I hereunto subscribed my name.

AMQS s. GKEE, 

